Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Synthesis and Characterization of Mesoporous Silica Nanoparticles Loaded with P-cymene against Rice Bacterial Blight

Version 1 : Received: 14 December 2023 / Approved: 15 December 2023 / Online: 15 December 2023 (14:52:59 CET)

A peer-reviewed article of this Preprint also exists.

Li, C.; Mo, Y.; Jiao, L.; Liu, Y.; Li, X. Synthesis and Characterization of Mesoporous Silica Nanoparticles Loaded with P-Cymene against Rice Bacterial Blight. Nanomaterials 2024, 14, 250. Li, C.; Mo, Y.; Jiao, L.; Liu, Y.; Li, X. Synthesis and Characterization of Mesoporous Silica Nanoparticles Loaded with P-Cymene against Rice Bacterial Blight. Nanomaterials 2024, 14, 250.

Abstract

Mesoporous silica nanoparticles (MSNs) can be used as carrier materials for the controlled release of pesticides while reducing their negative environmental impact. In this study, we screened an active ingredient, p-cymene (PC), with an excellent inhibitory effect on rice bacterial blight. Subsequently, the PC was successfully loaded onto MSNs via physisorption(PC@MSNs). PC@MSNs, characterized by a regular spherical shape, smooth surface, and an MSN average size of 262.9 nm, achieved an 8.6 % drug loading capacity. The release kinetics of the PC from the PC@MSNs demonstrated a sustained release (288 h) pattern influenced by drug diffusion. The efficacy of the PC@MSNs against Xanthomonas oryzae pv. Oryzae paralleled those of PC. Acute toxicity assays re-vealed that the PC@MSNs were less toxic to aquatic life (LC50=257.867 mg/L) and that the formu-lation showed no adverse effects on rice seedling growth. In summary, these results suggest that PC@MSNs can broaden PC's application scope in managing rice diseases.

Keywords

Mesoporous silica nanoparticles; p-cymene; sustained release; acute toxicity; crop safety

Subject

Chemistry and Materials Science, Materials Science and Technology

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